Cosmetics with hydrofluoroether (HFE)

ABSTRACT

A cosmetic containing at least 1% by weight of hydrofluoroether having a viscosity of less than 5 mPa·s at 25° C., which is represented by the general formula (1): 
     
       
         C n H m F l —O—C x H y F z   (1) 
       
     
     wherein n is a number of 1 to 12, m is a number of 0 to 25, l is a number of 0 to 11, m+l=2n+1, x is a number of 1 to 12, y is a number of 0 to 25, z is a number of 0 to 11, and y+z=2x+1, provided that m and y are not be simultaneously zero, and l and z are not be simultaneously zero, gives no environment disruption, is highly safe for the skin and improves the feeling in use.

This application is the national phase under 35 U.S.C. §371 of PCTInternational Application No. PCT/JP98/03499 which has an Internationalfiling date of Aug. 6, 1998, which designated the United States ofAmerica.

FIELD OF THE INVENTION

The present invention relates to a cosmetic comprising hydrofluoroether(abbreviated hereinafter into “HFE”) having a viscosity of less than 5mPa·s at 25° C. which is a fluorine-containing solvent causing noenvironmental disruption and being highly safe for the skin. The HFE ischaracterized by these properties as well as by high solubility influorine-containing oil having a viscosity of at least 5 mPa·s at 25° C.and high dispersibility in a fluorine compound-treated powder.

RELATED ART

In recent years, cosmetics incorporating volatile solvents such asisoparaffin and cyclic silicone are frequently used. These volatilesolvents have the advantage that upon application there is a refreshingfeeling and their solubility is high, and their use can easily improvethe feeling of cosmetics in use and increase the functionality thereof.However, isoparaffin and cyclic silicone severely irritate the skin andhave the problem of their adverse influence on the environment aftervolatilization.

Fluorocarbons such as perfluorohexane, chlorofluorocarbon (CFC) andhydrochlorofluorocarbon (HCFC) have also been examined as substitutesfor these solvents. Because the ozone depletion coefficient and warmingcoefficient of these solvents are high, there is the disadvantage thatthey are highly dangerous owing to environmental disruption.

SUMMARY OF THE INVENTION

As a result of the intense study for solving the problem describedabove, the present inventors found that a partially fluorinatedfluorine-containing solvent, the HFE, is highly safe for the skin andhas less or no influence on the environment. In addition to theproperties described above, the HFE has high solubility in afluorine-containing—oil used frequently in recent cosmetics and highdispersibility in fluorine compound-treated powders, thus easilypermitting improvements in the feeling of cosmetics upon use, and givinga high functionality.

The present invention provides a cosmetic comprising at least 1% byweight of the HFE having a viscosity of less than 5 mPa·s at 25° C.,represented by the general formula (1):

C_(n)H_(m)F_(l)—O—C_(x)H_(y)F_(z)  (1)

wherein n is a number of 1 to 12, m is a number of 0 to 25, l is anumber of 0 to 11, m+1=2n+1, x is a number of 1 to 12, y is a number of0 to 25, z is a number of 0 to 11, and y+z=2x+1, provided that m and yare not be simultaneously zero, and l and z are not be simultaneouslyzero.

The cosmetic of the present invention serve as a finishing cosmetic suchas foundation, face powder, cheek color and eye color, a fundamentalcosmetic such as face lotion, milky lotion, cream and sunscreen milkylotion, and hair-caring products such as rinse and conditioner, andlipstick overcoat.

DETAILED DESCRIPTION OF THE INVENTION

Preferably, the HFE is of the general formula (1′):

C_(n)F_(2n+1)—O—C_(x)H_(2x+1)  (1′):

wherein n is a number of 1 to 12, and x is a number of 1 to 12.

In the formulas (1) and (1′), n may be e.g. 1 to 10, particularly 1 to6, and x may be e.g. 1 to 10, particularly 1 to 6.

Specific examples of the HFE include:

 C₄F₉OCH₃, C₄F₉OC₂H₅, C₄F₉OC₃H₇, C₅F₁₁OC₂H₅, C₃F₇OC₄H₉ and C₄F₉OC₄H₉.

The HFE may be incorporated alone into the cosmetic or may be used as amixture of at least two types. The amount of the HFE is at least 1% byweight, for example 1 to 99.9% by weight, preferably 5 to 99% by weight,particularly 10 to 99% by weight, based on the cosmetic. The cosmeticcomprising the HFE can be produced in a conventional manner.

The HFE is advantageously superior in the ability to dissolve afluorine-containing oil having a viscosity of at least 5 mPa·s at 25° C.By virtue of this advantage, the cosmetic having the advantage neverachieved can be produced. It is preferable that at least 1% by weight ofthe fluorine-containing oil and at least 5% by weight of the HFE arecontained in the cosmetic. For example, the amount of thefluorine-containing oil is preferably 1 to 90% by weight, particularly 5to 50% by weight, for example 5 to 20% by weight, based on the cosmetic.For example, a weight ratio of the fluorine-containing oil to the HFEmay be in the range of from 1:100 to 1:5, preferably from 1:90 to 1:10.

The fluorine-containing oil having a viscosity of at least 5 mPa·s maybe, for example, a perfluoropolyether, or a fluorine-based oilrepresented by the general formula (2):

wherein R^(1a) and R^(1d) are each a hydrogen atom or a partially orcompletely fluorinated aliphatic group having 1 to 20 carbon atoms;R^(1b) and R^(1c) are each a hydrogen atom, or an aliphatic group having1 to 20 carbon atoms, or a partially or completely fluorinated aliphaticgroup having 1 to 20 carbon atoms, with the proviso that at least one ofR^(1a) to R^(1d) is a partially or completely fluorinated aliphaticgroup having 1 to 20 carbon atoms; and n is a number of 1 to 20, or afluorine-based oil represented by the general formula (3):

wherein R^(2a) is a hydrogen atom or a partially or completelyfluorinated aliphatic group having 1 to 20 carbon atoms; R^(2b), R^(2c)and R^(2d) are each an aliphatic group having 1 to 20 carbon atoms or apartially or completely fluorinated aliphatic group having 1 to 20carbon atoms, with the proviso that at least one of R^(2a) to R^(2d) isa partially or completely fluorinated aliphatic group having 1 to 20carbon atoms; and m is a number of 1 to 20.

The viscosity of the fluorine-containing oil is e.g. at least 5 mPa·s,particularly 10 to 10,000 mPa·s. The viscosity of the fluorine oil (andthe HFE) was measured by a Brookfield type viscometer or a capillarytube viscometer.

Specific examples of the perfluoropolyether include:

F(CF(CF₃)CF₂O)_(n)CF₂CF₃ (KRYTOX manufactured by Du Pont Co.);

CF₃O(CF(CF₃)CF₂O)_(n)(CF₂O)_(m)CF₃ (FOMBLIN Y manufactured by MontefluosLtd.);

CF₃O(CF₂CF₂O)_(n)(CF₂O)_(m)CF₃ (FOMBLIN Z manufactured by MontefluosLtd.); and

F(CF₂CF₂CF₂O)_(n)CF₂CF₃ (DEMNUM manufactured by Daikin Industries,Ltd.).

A number average molecular weight of the perfluoropolyether (asdetermined by ¹⁹F-NMR) is preferably in the range of 1,000 to 10,000.

In the general formulas (2) and (3), if R^(1a), R^(1b), R^(1c), R^(1d),R^(2a), R^(2b), R^(2c) and R^(2d) are partially or fully fluorinatedaliphatic groups, these may contain an oxygen atom or an unsaturatedbond. The partially fluorinated aliphatic group may be e.g. R¹⁰OCH₂group (R¹⁰ is a partially or fully fluorinated aliphatic group (e.g.alkyl group)). Examples of the partially or fully fluorinated aliphaticgroup are as follows:

—CFH₂

—CF₂H

—CF₃

—CF₂CF₂H,

—CF₂CF₃,

—CF₂CFHCF₃,

—CF₂CH₃,

—CF₂CFH₂,

—(CF₃)₂CH₃,

—CF₂CH(CF₃)₂,

—C(CF₃)₂CF₂H,

—C(CH₃)FCF₂CF₂CF₃,

—CH₂CF₂CH₂OH

—CH₂CF₂COOR¹¹ (R¹¹ is a C₁ to C₁₀ aliphatic group).

If R^(1b), R^(1c), R^(2b), R^(2c) and R^(2d) are a C₁ to C₂₀ aliphaticgroup, these may have an oxygen atom. Examples of the C₁ to C₂₀aliphatic group include an alkyl group such as methyl, ethyl, n-propyl,isopropyl, n-butyl, isobutyl, sec-butyl and t-butyl as well as ahydroxyalkyl group such as hydroxymethyl and 2-hydroxyethyl (—CH₂CH₂OH).

R^(1b), R^(1c), R^(2b) and R^(2c) in the repeating unit may be the sameor different.

The number of carbon atoms in each of R^(1a) to R^(1d) and R^(2a) toR^(2d) is from 1 to 10, particularly from 2 to 4.

Specific examples of the fluorine-based oil represented by the generalformula (2) are as follows:

Specific examples of the fluorine-based oil represented by the generalformula (3) are as follows:

The fluorine-containing oil may be a mixture of at least two types. Forexample, a mixture consisting of the fluorine-based oils of the generalformulas (2) and (3) at a weight ratio of from 5:95 to 95:5, for example20:80 to 80:20, may be used as the fluorine-containing oil.

The HFE of the present invention is advantageously superior in theability to disperse a fluorine compound treated powder. By use of thisadvantage, the cosmetic having the characteristics never achieved in thepast can be produced as well.

It is preferable that at least 1% by weight, based on the cosmetic, ofthe fluorine compound-treated powder and at least 5% by weight, based onthe cosmetic, of the HFE are contained. For example, the amount of thefluorine compound-treated powder in the cosmetic is preferably 1 to 90%by weight, particularly 5 to 50% by weight, for example 5 to 20% byweight, based on the cosmetic. For example, the weight ratio of thefluorine compound-treated powder to the HFE may be in the range of from1:100 to 1:5, preferably 1:90 to 1:10.

The fluorine compound-treated powder may be a powder which issurface-treated with a fluorine-containing phosphate ester represented,for example, by the general formula (4):

[Rf—A—O]_(n)PO(OM)_(3−n)  (4)

wherein Rf represents a C₆ to C₆ polyfluoroalkyl group orperfluoropolyether group, “A” represents a C₁ to C₄ alkylene group,

(wherein R¹ is a C₁ to C₄ alkyl group and R² is a C₁ to C₄ alkylenegroup), or

wherein “M” represents a hydrogen atom, a metal atom, ammonium orsubstituted ammonium, and n is a number of 1 to 3.

A base powder to be treated includes inorganic powder such as talc,kaolin, mica, mica titanium, titanium oxide, iron oxide, magnesiumoxide, zinc monoxide, zinc dioxide, heavy or light calcium carbonate,dibasic calcium phosphate, aluminum hydroxide, barium sulfate, silica,alumina, silica gel, carbon black, antimony oxide, magnesium silicatealuminate and magnesium metasilicate aluminate, as well as an organicpowder such as protein powder, fish scale, metallic soap, polyvinylchloride, nylon-12, microcrystalline fiber powder and tar pigment.

The base powder may be treated with 1 to 10% by weight, relative to thebase powder, of the fluorine-containing phosphate ester. The surfacetreatment may be generally surface coating.

In the present invention, suitable chemicals for modifying the feelingin use may be also employed in the step of surface treatment. Examplesof the chemicals for modifying the feeling of the cosmetic powder in useinclude lecithin, N-mono long-chain acyl basic amino acids, silicone,chitosan, collagen and wax.

When the fluorine compound-treated powder is incorporated into thecosmetic, at least two types of the powders may be mixed.

Furthermore, the cosmetic may simultaneously comprise three ingredients,that is, HFE, the fluorine-containing oil and the fluorinecompound-treated powder. Based on the cosmetic comprising threeingredients, the HFE may be contained in an amount of 5 to 99% byweight, preferably 10 to 90% by weight, the fluorine-containing oil maybe contained in an amount of 0.5 to 90% by weight, preferably 5 to 50%by weight, and the fluorine compound-treated powder may be contained inan amount of 0.5 to 90% by weight, preferably 5 to 50% by weight.

The cosmetic of the present invention may contain solid or semi-solidoils such as Vaseline, lanolin, ceresin, microcrystalline wax, carnaubawax, candelilla wax, higher aliphatic acids and higher alcohols; liquidoils such as squalane, liquid paraffin, ester oils, diglycerides,triglycerides and silicone oil; fluorine-containing oils such asperfluoropolyether, perfluorodecalin and perfluoroctane; water- andoil-soluble polymers, surface active agents, coloring agents such asorganic dyestuffs, ethanol, preservatives, antioxidants, pigments,thickening agents, pH adjusters, perfumes, UV absorbers, humectants,blood stream promoters, coolants, sweat regulators, germicides, skinactivators etc.

PREFERRED EMBODIMENT OF THE INVENTION

The examples of the present invention is described specifically, butthis description does not limit the present invention.

EXAMPLE 1

50% by weight of a perfluoropolyether (FOMBLIN HC/04 manufactured byAudimont) (viscosity at 25° C.: 70 mPa·s) was mixed with 50% by weightof C₄F₉OCH₃ (HFE A) (viscosity at 25° C.: 0.6 mPa·s) under stirring togive a solution. Thereafter, a very small amount of a perfume was addedto give a non-aqueous lotion. This non-aqueous lotion was felt verysmooth in use. After the lotion was applied onto the skin, the HFE Aevaporated rapidly and a uniform coating of the perfluoropolyethermaintained the skin moisture.

EXAMPLE 2

A non-aqueous lotion was obtained in the same manner as in Example 1except that the perfluoropolyether was replaced by a mixture (A/B=8/2 byweight) of the fluorine-containing oil (viscosity at 25° C.: 35 mPa·s)represented by chemical formula A:

and the fluorine-containing oil (viscosity at 25° C.: 40 mPa·s)represented by chemical formula B:

This non-aqueous location had the same properties as in Example 1.

EXAMPLE 3

A non-aqueous lotion was obtained in the same manner as in Example 1except that the perfluoropolyether was replaced by a mixture (C/D=7/3 byweight) of the fluorine-containing oil (viscosity at 25° C.: 350 mPa·s)represented by chemical formula C:

and the fluorine-containing oil (viscosity at 25° C.: 400 mPa·s)represented by chemical formula D:

This non-aqueous location had the same properties as in Example 1.

In the Examples below, the mixture powder (a mixture of fluorinecompound-treated powders) shown in Table 1 was used to produce acosmetic. The fluorine compound-treated powder was prepared by treatinga powder with 5% by weight of perfluoroalkyl ethyl phosphate esterdiethanol amine salt ((C₉F₁₉CH₂CH₂O)_(n)P(═O) [ONH₂(CH₂CH₂OH)₂]_(3−n)(average of n=1.8)).

TABLE 1 Formulation of the Mixture Powder Starting Materials % by weight(1) fluorine compound-treated titanium oxide 8.0 (2) fluorinecompound-treated yellow iron 0.9   oxide (3) fluorine compound-treatedred iron oxide 0.3 (4) fluorine compound-treated black iron 0.3   oxide(5) fluorine compound-treated talc 36.1 (6) fluorine compound-treatedsericite 50.6 (7) fluorine compound-treated mica 3.8

EXAMPLE 4

The powder ingredients in the formulation shown in Table 2 were mixedand ground with an atomizer and then transferred to a Henschel mixer.Then FOMBLIN HC/04 was added thereto, and the mixture was uniformlymixed. The mixture was dispersed in C₄H₉OC₂H₅ (HFE B) (viscosity at 25°C.: 0.7 mPa·s) to give a solvent dispersion-type foundation. Thissolvent dispersion-type foundation was felt very smooth in use. Afterthis foundation was applied onto the skin, the HFE B evaporated rapidly,and the resulting uniform coating maintained the skin moisture.

TABLE 2 Non-Aqueous Dispersion-Type Foundation Blending Amount StartingMaterials (% by weight) (1) mixture powder (Table 1) 10 (2)perfluoropolyether (FOMBLIN 10   HC/04) (3) HFE B (C₄F₉OC₂H₅) 80

EXAMPLE 5

The ingredients (1) to (8) in the formulation shown in Table 3 weremixed and ground in a colloid mill. After this mixture was heated at 80°C., the ingredients (9) to (13) which had been heated and mixed at 80°C. were added thereto and emulsified uniformly in a homomixer. Theingredient (14) was added to this emulsion, further emulsified uniformlyin a homomixer, and cooled to room temperature to give a liquidfoundation. This liquid foundation was felt very smooth in use.

TABLE 3 Liquid Foundation Blending Amount Starting Materials (% byweight)  (1) 1,3-butylene glycol 10.00  (2) carboxymethyl cellulose 0.20 (3) aluminum magnesium silicate 0.20  (4) mixture powder (Table 1)14.00  (5) purified water 50.75  (6) sodium N-stearoyl-L-glutamate 0.75 (7) potassium hydroxide 0.40  (8) p-oxybenzoate 0.20  (9) glyceryltrioctanoate 5.00 (10) diisostearyl malate 3.00 (11) stearic acid 3.00(12) glyceride monostearate 1.50 (13) cethanol 1.00 (14) HFE D(C₄F₉OC₄H₉) 10.00

EXAMPLE 6

The fluorine compound-treated zinc oxide as the ingredient (3) shown inTable 4 was a product prepared by treating zinc oxide with 7% by weight,based on zinc oxide, of a perfluoroalkyl ethyl phosphate esterdiethanolamine salt (the same as used in Example 3).

In the formulation shown in Table 4, the ingredients (1) and (2) weremixed and dissolved at room temperature, and the ingredient (3) wasadded thereto and dispersed with a disper. The ingredients (4) to (9)were added thereto under stirring and emulsified with a homomixer togive a sunscreen emulsion. This sunscreen emulsion was felt very smoothin use. After this emulsion was applied onto the skin, the HFE Aevaporated rapidly, and the resulting uniform coating maintained theskin moisture.

TABLE 4 Sunscreen Emulsion Blending Amount Starting Materials % byweight (1) HFE A (C₄F₂OCH₃) 40 (2) fluorine-containing oil (the same asused 10   in Example 2) (3) fluorine compound-treated zinc oxide 5 (4)dimethylpolysiloxane-polyoxyalkylene copolymer 3 (5) glycerin 2 (6)ethanol 5 (7) water 32.9 (8) octyl methoxycinnamate 2 (9) perfume 0.1

EXAMPLE 7

A set lotion was produced using the formulation shown in Table 5. Afterthe ingredients (4) to (7) were dissolved, the ingredients (1) to (3)were added, moistened, and dissolved. Further, the ingredient (8) wasadded thereto slowly under stirring to give a set lotion. This setlotion was felt very smooth in use.

TABLE 5 Set Lotion Blending Amount Starting Materials (% by weight) (1)polyvinyl pyrrolidone 5 (2) polyoxyethylene (20) oleylether 5 (3)1,3-butylene glycol 10 (4) HFE B (C₄F₂OC₂H₅) 5 (5) p-oxybenzoate ester0.1 (6) colorant Trace amount (7) perfume 0.5 (8) purified waterAdjusted to 100

EFFECT OF THE INVENTION

The HFE causing no environmental disruption and being highly safe forthe skin is incorporated into the cosmetic, thereby increasing thesolubility in the fluorine-containing oil and dispersibility in thefluorine compound-treated powder. The feeling of the cosmetic in use canbe improved and the functionality of the cosmetic can be increased.

What is claimed is:
 1. A cosmetic comprising at least one compound orcomposition selected from the group consisting of petrolatum, lanolin,ceresin, microcrystalline wax, carnauba wax, candelilla wax, higheraliphatic acids, higher alcohols, squalane, liquid paraffin, ester oils,diglycerides, triglycerides, silicone oil, perfluoropolyether,perfluorodecalin, perfluoroctane, water-soluble polymers, oil-solublepolymers, surface active agents, coloring agents, ethanol,preservatives, antioxidants, pigments, thickening agents, pH adjusters,perfumes, UV absorbers, humectants, blood stream promoters, coolants,sweat regulators, germicides and skin activators; and at least 1% byweight of a hydrofluoroether, wherein the hydrofluoroether has aviscosity of less than 5 mPa·s at 25° C. and is represented by thegeneral formula (1): C_(n)F_(2n+1)—O—C_(x)H_(2x+1)  (1)  wherein n is anumber of 1 to 6, and x is a number of 1 to
 6. 2. The cosmetic accordingto claim 1, which comprises: at least 1% by weight of afluorine-containing oil having a viscosity of at least 5 mPa·s at 25°C.; and at least 5% by weight of hydrofluoroether.
 3. The cosmeticaccording to claim 2, wherein the fluorine-containing oil is aperfluoropolyether, a fluorine-based oil represented by the generalformula (2):

wherein R^(1a) and R^(1d) are each a hydrogen atom or a partially orcompletely fluorinated aliphatic group having 1 to 20 carbon atoms;R^(1b) and R^(1c) are each a hydrogen atom, or an aliphatic group having1 to 20 carbon atoms, or a partially or completely fluorinated aliphaticgroup having 1 to 20 carbon atoms, with the proviso that at least one ofR^(1a) to R^(1d) is a partially or completely fluorinated aliphaticgroup having 1 to 20 carbon atoms; and n is a number of 1 to 20, or afluorine-based oil represented by the general formula (3)

wherein R^(2a) is a hydrogen atom or a partially or completelyfluorinated aliphatic group having 1 to 20 carbon atoms; R^(2b), R^(2c)and R^(2d) are each an aliphatic group having 1 to 20 carbon atoms or apartially or completely fluorinated aliphatic group having 1 to 20carbon atoms, with the proviso that at least one of R^(2a) to R^(2d) isa partially or completely fluorinated aliphatic group having 1 to 20carbon atoms, and m is a number of 1 to
 20. 4. The cosmetic according toclaim 1, which comprises at least 1% by weight of a fluorinecompound-treated powder and at least 5% by weight of thehydrofluoroether.
 5. The cosmetic according to claim 4, wherein thefluorine compound-treated powder is a powder surface-treated with afluorine-containing phosphate ester represented by the general formula(4): [Rf—A—O]_(n)PO(OM)_(3−n)  (4) wherein Rf represents a C₆ to C₁₆polyfluoroalkyl group or perfluoropolyether group, A represents a C₁ toC₄ alkylene group,

 (and R¹ is a C₁ to C₄ alkyl group and R² is a C₁ to C₄ alkylene group),or

 wherein M represents a hydrogen atom, a metal atom, ammonium orsubstituted ammonium, and n is a number of 1 to
 3. 6. A finishingcosmetic, a fundamental cosmetic, a hair-care product, or a lipstickovercoat comprising the cosmetic of claim
 1. 7. The cosmetic accordingto claim 1, further comprising a compound or composition selected fromthe group consisting of lecithin, N-mono long-chain acyl basic aminoacids, silicone, chitosan, collagen and wax.
 8. The cosmetic accordingto claim 3, wherein said perfluoropolyether has a number averagemolecular weight of 1,000 to 10,000, and is selected from the groupconsisting of F(CF(CF₃)CF₂O)_(n)CF₂CF₃,CF₃O(CF(CF₃)CF₂O)_(n)(CF₂O)_(m)CF₃, CF₃O(CF₂CF₂O)_(n)(CF₂O)_(m)CF₃, andF(CF₂CF₂CF₂O)_(n)CF₂CF₃.
 9. The cosmetic according to claim 3, whereinsaid fluorine-based oil of formula (2) is


10. The cosmetic according to claim 3, wherein said fluorine-based oilof formula (3) is


11. The cosmetic according to claim 4 or 5, wherein said fluorinecompound-treated powder is in the amount of 5 to 50% by weight.
 12. Thecosmetic according to claim 4 or 5, wherein the weight ratio of thefluorine compound-treated powder to the hydrofluoroether is from 1:100to 1:5.
 13. The cosmetic according to claim 5, wherein said powder to besurface-treated is selected from the group consisting of talc, kaolin,mica, mica titanium, titanium oxide, iron oxide, magnesium oxide, zincmonoxide, zinc dioxide, heavy calcium carbonate, light calciumcarbonate, dibasic calcium phosphate, aluminum hydroxide, bariumsulfate, silica, alumina, silica gel, carbon black, antimony oxide,magnesium silicate aluminate and magnesium metasilicate aluminate,protein powder, fish scale, metallic soap, polyvinyl chloride, nylon-12,microcrystalline fiber powder and tar pigment.
 14. The cosmeticaccording to claim 4 or 5, wherein said cosmetic comprises more than onetype of said fluorine compound-treated powder.
 15. A cosmeticcomprising: a) at least one compound or composition selected from thegroup consisting of petrolatum, lanolin, ceresin, microcrystalline wax,carnauba wax, candelilla wax, higher aliphatic acids, higher alcohols,squalane, liquid paraffin, ester oils, diglycerides, triglycerides,silicone oil, perfluoropolyether, perfluorodecalin, perfluoroctane,water-soluble polymers, oil-soluble polymers, surface active agents,coloring agents, ethanol, preservatives, antioxidants, pigments,thickening agents, pH adjusters, perfumes, UV absorbers, humectants,blood stream promoters, coolants, sweat regulators, germicides and skinactivators; b) at least 5% by weight of a hydrofluoroether, wherein thehydrofluoroether has a viscosity of less than 5 mPa·s at 25° C. and isrepresented by the general formula (1):C_(n)F_(2n+1)—O—C_(x)H_(2x+1)  (1)  wherein n is a number of 1 to 6, andx is a number of 1 to 6; c) at least 0.5% by weight of afluorine-containing oil; and d) at least 1% by weight of a fluorinecompound-treated powder.
 16. The cosmetic according to claim 15, whereinsaid cosmetic comprises: 10% to 90% by weight of said hydrofluoroether;5% to 50% by weight of said fluorine-containing oil; and 5% to 50% byweight of said fluorine compound-treated powder.
 17. The cosmeticaccording to claim 16, wherein said fluorine-containing oil is aperfluoropolyether; a fluorine-based oil represented by the generalformula (2):

 wherein R^(1a) and R^(1d) are each a hydrogen atom or a partially orcompletely fluorinated aliphatic group having 1 to 20 carbon atoms,R^(1b) and R^(1c) are each a hydrogen atom, or an aliphatic group having1 to 20 carbon atoms, or a partially or completely fluorinated aliphaticgroup having 1 to 20 carbon atoms, with the proviso that at least one ofR^(1a) to R^(1d) is a partially or completely fluorinated aliphaticgroup having 1 to 20 carbon atoms, and n is a number of 1 to 20; or afluorine-based oil represented by the general formula (3):

 wherein R^(2a) is a hydrogen atom or a partially or completelyfluorinated aliphatic group having 1 to 20 carbon atoms, R^(2b), R^(2c)and R^(2d) are each an aliphatic group having 1 to 20 carbon atoms or apartially or completely fluorinated aliphatic group having 1 to 20carbon atoms, with the proviso that at least one of R^(2a) to R^(2d) isa partially or completely fluorinated aliphatic group having 1 to 20carbon atoms, and m is a number of 1 to
 20. 18. The cosmetic of claim 1,which further contains water.